Question

Cylinder A contains a gas whose molecules have an average speed of 0.0000001 meters/sec. Cylinder B contains a gas whose molecules have an average speed of 0.3 meters/sec. Select the statement below that is true regarding these cylinders. options: A. Cylinder A contains a gas that has a temperature closest to absolute zero. B. Even though the molecules are moving at different speeds in the two cylinders, they have the same kinetic energy. C.Cylinder B contains molecules that are moving more slowly than the molecules in Cylinder A. D.Cylinder B contains a gas that has a temperature closest to absolute zero.

Answer 1

Option A, Cylinder A contains a gas that has a temperature closest to absolute zero

Step-by-step explanation:

The speed of gas molecules is cylinder B is higher than that of cylinder A. Hence, option C is incorrect.

Also at absolute temperature, the rms speed of gas molecules is equal to zero. Speed of gas in cylinder B has a temperature is much higher than speed nearing to zero.

Hence, option D is also incorrect.

Kinetic energy can not be equal because for gas in cylinder A, the mass should be quite high.

Hence, option A is the only right answer.

Answer 2

Cylinder A contains a gas that has a temperature closest to absolute zero.

Step-by-step explanation:

The kinetic energy of gas molecules are dependent upon the temperature of the gas . Higher the temperature , higher the kinetic energy . Higher the kinetic energy higher the velocity . The gas molecules of cylinder B has very small velocity . So their kinetic energy is very small . Therefore the temperature of the gas must be very low . As the velocity is almost zero , it may be possible that the temperature of gas is close to absolute zero which is the smallest temperature possible.